The Effect of Lycopene on Sperm Quality in Men Attending Fertility Clinic

Impaired testicular function contributes to around 50% of heterosexual infertility and is often characterized by a low total motile sperm count. Evidence suggests that one cause of low total motile sperm count is oxidative stress within the ejaculate, where harmful oxygen species damage the sperm. Antioxidants to combat oxidative stress within the ejaculate have been proposed as a method of increasing the total motile sperm count. Lycopene is a powerful antioxidant found abundantly in cooked tomatoes and has been shown to improve testicular function in a healthy population. This double blinded randomised controlled trial aims to investigate whether lycopene can improve testicular output in participants with a low motile sperm count. Semen analysis will be carried out before and after the intervention. The intervention is a commercially available lycopene capsule or an identical placebo.

Hypothesis: Supplementation with lactolycopene will improve testicular function (semen quality) in males with low total motile sperm count (TMSC).

Inclusion criteria

• Males aged 18 - 50 years of age
• Attending the Fertility Clinic at the Jessop Wing, (Sheffield Teaching Hospitals).
• Found to have poor testicular function as evidenced by a low motile sperm count (<20 million motile sperm per ejaculate).
• Willing to comply with the study procedures and provide informed consent.

Exclusion criteria

• Participants who report allergy to tomatoes, whey, soy.
• Men with previous testicular surgery or a current or previous diagnosis of cancer.
• Men found to have normal sperm parameters.
• Known infection with hepatitis or HIV.
• Men with azoospermia